Analysis of Output Characteristics of Photovoltaic Arrays Under Shaded Conditions
The output power–voltage curve of photovoltaic array under uniform illumination is a single-peak value, the voltage–current U-I curve is a single-step type. Once the photovoltaic array is obscured by clouds, mud, trees, etc., the photovoltaic array appears like partial shadows, and the P-U curve output of the photovoltaic array will appear like multiple peak values, and the U-I curve appears multiple steps, which will reduce the output power of the photovoltaic array. By using MATLAB/Simulink to build the model of the photovoltaic array under the shadow condition and carry out several simulations, we can get some characteristics of the P-U curve and the U-I curve, and summarize the rules. It provides a theoretical basis for the maximum power point tracking (MPPT) under the shadow condition.
KeywordsPhotovoltaic array Partial shading P-U characteristic curve
The Key Research Project of Natural Science for Anhui Provincial Universities (KJ2017A747).
- 1.Xu, T.: Research and Analysis of Maximum Power Point Tracking for Photovoltaic Power Generation under Shadow. Lanzhou Jiaotong University (2016)Google Scholar
- 2.Wang, Q., Xu, H., Zhang, Q., Zhang, H.: Research on improved MPPT based on variable step conductance increment method. Manag. Technol. Electr. Appl. Energy Effic. (21), 10–15 + 47 (2017)Google Scholar
- 3.Liqiao, W., Sun, X.: Photovoltaic Generation Technology in Distributed Generation System, pp. 8–12. Mechanical Industry Press, Beijing (2014)Google Scholar
- 4.Ningning, C.: Research on Multi-Peak Maximum Power Tracking of Grid-Connected Photovoltaic Inverter. Nanjing University of Science and Technology (2014)Google Scholar
- 5.Li, S.: Research on Mismatch Analysis and Optimal Control of Photovoltaic System under Shadow Condition. Hefei University of Technology (2016)Google Scholar